- a radio or television program without a commercial sponsor.
Origin of sustaining program
An Americanism dating back to 1930–35
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- US and Canadian a television or radio programme promoted by the broadcasting network or station itself and not by a commercial sponsor
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012